Battery device, electric equipment and energy storage equipment

Abstract

The utility model provides a battery device, electric equipment and energy storage equipment, and relates to the technical field of batteries, the battery device comprises an electric connecting piece, the electric connecting piece is divided into a body and a thinning area, the body is used for current transmission between two electronic components, and the thinning area is in plug-in fit with a signal acquisition assembly and can be used as a sampling area of a sampling path; wherein the thickness of the thinning area is smaller than that of the body, and the thinning area is arranged on the side of the body. Therefore, the electric connecting piece can be conveniently inserted and matched with the signal acquisition assembly through the thinning area, the assembly and disassembly efficiency can be improved, and production and maintenance are facilitated. Besides, the electric connecting piece is divided into the body and the thinning area, so that the function division of a sampling path and a large current path on the physical level can be realized, and the sampling precision and the system stability are effectively improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device, electrical equipment, and energy storage device. Background Technology

[0002] New energy batteries are being used more and more widely in daily life and industry. For example, new energy vehicles equipped with batteries are already widely used. In addition, batteries are being used more and more in the field of energy storage.

[0003] Battery devices typically consist of battery cell packs and a power distribution unit, where the power distribution unit manages and distributes the electrical energy of the battery cell packs. The electronic components of the power distribution unit transmit high currents via electrical connectors, and signal acquisition components are electrically connected to these connectors to collect parameter information. In related technologies, the connection of the signal acquisition components suffers from a large number of parts, a cumbersome installation process, and also affects current transmission.

[0004] The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art. Utility Model Content

[0005] In view of the above problems, embodiments of this application provide a battery device, an electrical device, and an energy storage device, which can improve the problems of a large number of parts, cumbersome installation process, and problems affecting current transmission in the connection between electrical connectors and signal acquisition components.

[0006] In a first aspect, embodiments of this application provide a battery device, including a battery cell pack, a power distribution unit, and a signal acquisition component; the power distribution unit is electrically connected to the battery cell pack; the power distribution unit includes electronic components and electrical connectors, the electrical connectors including a body and a thinned area; the body is electrically connected to two electronic components for current transmission between the two electronic components; the thickness of the thinned area is less than the thickness of the body, and the thinned area is disposed on the side of the body; the signal acquisition component is plugged into the thinned area for acquiring parameter information at the electrical connector.

[0007] In the above technical solution, a thinning area is provided on the electrical connector. This thinning area can be used as a sampling area for the signal acquisition component to collect parameter information from the power distribution unit. Since the thickness of the thinning area is less than the thickness of the electrical connector body and the thinning area is located on the side of the body, the electrical connector can be easily plugged into the signal acquisition component through the thinning area, which can improve assembly and disassembly efficiency and facilitate production and maintenance. Moreover, in the electrical connector, the body is mainly used to carry the overcurrent transmission of large currents and can serve as the bearing component of the large current path. The thinning area located on the side of the body is electrically connected to the signal acquisition component and can serve as the sampling area of ​​the sampling path. By dividing the electrical connector into the body and the thinning area, the sampling path and the large current path can be functionally partitioned at the physical level, thereby effectively improving sampling accuracy and system stability.

[0008] In some embodiments, at least a portion of the thinning region protrudes from the side of the body, and at least a portion of the structure of the thinning region protruding from the side of the body is plugged into and engaged with the signal acquisition component.

[0009] In the above technical solution, the design of at least part of the thinning area protruding from the side of the body can, on the one hand, minimize interference between the side of the body and the signal acquisition component during the insertion and mating process, thus facilitating assembly; on the other hand, it can facilitate the processing of the thinning area.

[0010] In some embodiments, the battery device further includes a battery management unit electrically connected to a signal acquisition component; the signal acquisition component is a first slot that is inserted into the thinning region, and the first slot is disposed on the battery management unit.

[0011] In the above technical solution, by setting the signal acquisition component as the first slot and integrating it on the battery management unit, and then using the thinning area to connect with the first slot, the electrical connector can be directly plugged into the battery management unit. In this way, components such as the sampling terminal assembly (which may include sampling terminals and sampling wires) can be eliminated, simplifying the structure, improving the integration and space utilization of the device, and further improving assembly efficiency.

[0012] In some embodiments, the signal acquisition component further includes a sampling terminal and a sampling wire; the sampling terminal includes a clamping structure and a connector connected together; the clamping structure is provided with a second slot, which is inserted into the thinning area; the connector is provided with a receiving space; one end of the sampling wire is inserted into the receiving space and fixed to the connector, and the other end of the sampling wire is connected to the battery management unit so that the thinning area is electrically connected to the battery management unit.

[0013] In the above technical solution, the electrical connection between the electrical connector and the battery management unit can be achieved through sampling terminals and sampling wires. Moreover, since the second slot on the clamping structure can be inserted and mated with the thinned area, the connection method between the sampling terminal and the electrical connector is simpler, the assembly efficiency is high, and maintenance is convenient.

[0014] In some embodiments, the clamping structure includes two sheets spaced apart from each other, with the gap between the two sheets forming a second slot; when the thinning region is inserted into the second slot, the thinning region is clamped between the two sheets, and the thinning region and the two sheets are stacked along the thickness direction of the thinning region.

[0015] In the above technical solution, the thinning area and the two sheets can be stacked and interlocked, allowing for a larger contact area between the two sheets and the thinning area, thereby improving the connection strength between the clamping structure and the thinning area. Furthermore, the clamping structure, employing a two-sheet design, features a simple structure, convenient processing, and low cost.

[0016] In some embodiments, a first limiting portion is provided on the thinning region, and a second limiting portion is provided on the opposite sides of the two sheets; when the thinning region is inserted between the two sheets, the first limiting portion and the second limiting portion engage with each other along the thickness direction of the thinning region, so that the thinning region and the two sheets are limited in at least one direction perpendicular to the thickness direction of the thinning region.

[0017] In the above technical solution, the cooperation between the first limiting part and the second limiting part can limit the thinning area and the two sheets in at least one direction, thereby improving the connection stability between the clamping structure and the thinning area.

[0018] In some embodiments, a first positioning part is provided on the thinning area, and a second positioning part is provided between the two sheets; when the thinning area is inserted between the two sheets, the first positioning part and the second positioning part abut against each other along a first direction; wherein, the first direction is the direction in which the clamping structure points to the connector or the direction in which the connector points to the clamping structure.

[0019] In the above technical solution, the cooperation between the first positioning part and the second positioning part can be used to determine whether the clamping structure and the thinning area are properly inserted, so as to facilitate the positioning and assembly between the sampling terminal and the thinning area and improve the stability after assembly.

[0020] In some embodiments, after the thinning region is inserted into the second slot, the thinning region is welded to the clamping structure.

[0021] In the above technical solution, welding is performed on the basis of the clamping structure and the thinning area to further improve the connection strength between the sampling terminal and the electrical connector.

[0022] In some embodiments, the connector includes a connecting portion and a pressing portion; the connecting portion is connected to a clamping structure; the pressing portion is connected to the side of the connecting portion and together with the connecting portion defines an accommodating space; the pressing portion can be bent toward the inside of the accommodating space to fix one end of the sampling wire placed in the accommodating space.

[0023] In the above technical solution, the connector can facilitate the insertion of the sampling wire by setting the receiving space, and the pressing part of the connector can be bent, which can easily and firmly lock the end of the sampling wire in the receiving space of the connector. Since the connector is connected to the clamping structure and the clamping structure is connected to the thinning area, the design of the connector can facilitate the electrical connection between the sampling wire and the thinning area.

[0024] In some embodiments, the thickness of the thinning region is T1, where T1 satisfies: 0.1mm≤T1≤2mm; the thickness of the body is T2, where T2 satisfies: 1mm≤T2≤10mm.

[0025] In the above technical solution, by limiting the thickness range of the thinning area and the thickness range of the body, both the thinning area and the body in the electrical connector can have suitable thicknesses, so that the thinning area is suitable as a sampling area for the sampling path, and the body can bear the overcurrent transmission of large currents, thereby realizing the functional partitioning of the sampling path and the large current path at the physical level; at the same time, the thinning area and the body with suitable thicknesses can have sufficient structural strength to meet the basic usage requirements of the electrical connector.

[0026] In some embodiments, a transition region is provided between the thinning region and the body; the dimension of the transition region in the thickness direction of the thinning region is the thickness dimension of the transition region, the thickness dimension of the transition region is between the thickness of the thinning region and the thickness of the body, and the thickness dimension of the transition region tends to increase along a second direction; wherein, the second direction is the direction from one end of the transition region connected to the thinning region to one end of the transition region connected to the body.

[0027] In the above technical solution, by setting a transition zone, the transition between the body and the thinning zone can be natural, the structure has continuity, good electrical conductivity, uniform stress distribution, and reliable mechanical strength.

[0028] In some embodiments, the thinning region has a first surface perpendicular to its thickness direction, the transition region has a second surface perpendicular to the thickness direction of the thinning region, and the body has a third surface perpendicular to the thickness direction of the thinning region; wherein the first surface, the second surface, and the third surface are coplanar.

[0029] In the above technical solution, the thinning zone, the transition zone, and the body are coplanar on one side of the thickness direction of the thinning zone. With this structural design, only one side of the thinning zone and the transition zone needs to be thinned. The coplanar side of the thinning zone and the transition zone can be used as a positioning surface during processing to facilitate the formation of the thinning zone and the transition zone.

[0030] In some embodiments, the body has a third surface and a fourth surface disposed opposite to each other along the thickness direction of the thinning region; the two surfaces of the thinning region disposed opposite to each other in its thickness direction are located between the third surface and the fourth surface.

[0031] In the above technical solution, the thinning area is located between the third and fourth surfaces of the body in the thickness direction of the thinning area, so that the surfaces on both sides of the transition area in the thickness direction of the thinning area are designed as transition planes, which can further improve the uniformity of stress distribution and enhance the structural strength between the thinning area, the transition area and the body.

[0032] Secondly, embodiments of this application also provide an electrical device, including a battery device provided in any of the embodiments of the first aspect, the battery device being used to provide electrical energy.

[0033] Thirdly, embodiments of this application also provide an energy storage device, including a battery device provided in any of the embodiments of the first aspect, the battery device being used to store electrical energy. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a vehicle provided according to some embodiments of this application;

[0036] Figure 2 This is an exploded structural diagram of a battery device provided according to some embodiments of this application;

[0037] Figure 3 This is a three-dimensional structural schematic diagram of an electrical connector provided according to some embodiments of this application;

[0038] Figure 4 This is a schematic diagram of the structure of the electrical connector and the battery management unit plugged in according to some embodiments of this application;

[0039] Figure 5 This is a schematic diagram of the structure in which the thinned area and the first slot are connected and mated according to some embodiments of this application;

[0040] Figure 6 This is a schematic diagram of the connection and mating structure between the electrical connector and the sampling terminal according to some embodiments of this application;

[0041] Figure 7 for Figure 6 A magnified structural diagram of part A in the middle;

[0042] Figure 8 This is a three-dimensional structural schematic diagram of a sampling terminal provided according to some embodiments of this application;

[0043] Figure 9 This is a schematic diagram of the cross-sectional structure of the thinned region and two sheets after assembly according to some embodiments of this application;

[0044] Figure 10 This is a schematic diagram of the structure of a first type of thinning region provided according to some embodiments of this application;

[0045] Figure 11 This is a schematic diagram of the structure of a second thinning region provided according to some embodiments of this application;

[0046] Figure 12 This is a schematic diagram of the structure of a third thinning region provided according to some embodiments of this application;

[0047] Figure 13 This is a schematic diagram of the structure of a fourth thinning region provided according to some embodiments of this application;

[0048] Figure 14 This is a schematic diagram of the structure of the fifth thinning region provided according to some embodiments of this application;

[0049] Figure 15 This is a schematic diagram of the structure of the thinned area and the sampling terminal in a state where they are not fully assembled, according to some embodiments of this application;

[0050] Figure 16 This is a schematic diagram of the structure of a first transition region provided according to some embodiments of this application;

[0051] Figure 17 This is a schematic diagram of the structure of a second transition region provided according to some embodiments of this application.

[0052] The attached figures are labeled as follows:

[0053] 1000 - Vehicles;

[0054] 100 - Battery device, 110 - Battery cell pack, 120 - Housing, 1201 - First housing, 1202 - Second housing;

[0055] 200-Controller;

[0056] 300-motor;

[0057] 10-Electrical connector, 11-Body, 111-First connecting end, 112-Second connecting end, 113-Third surface, 114-Fourth surface, 12-Thinning area, 121-First limiting part, 122-First positioning part, 123-First surface, 13-Transition area, 131-Second surface;

[0058] 20 - Battery management unit, 21 - First slot, 211 - Elastic pressing member;

[0059] 30 - Sampling terminal, 31 - Clamping structure, 311 - Second slot, 312 - Sheet body, 3121 - Second limiting part, 3122 - Second positioning part, 32 - Connector, 321 - Connecting part, 322 - Pressing part, 323 - Reinforcing rib;

[0060] 40 - Sampling wire. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] Unless otherwise defined, all technical and scientific terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the embodiments of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0063] The term "embodiment" as used in this application means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0064] The specific term "exemplary" used in the embodiments of this application means "serving as an example, embodiment, or illustration." Any embodiment illustrated as "exemplary" is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0065] In the description of the embodiments of this application, the technical terms "first", "second", "third", etc. are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0066] In the description of the embodiments in this application, the technical term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0067] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0068] In the description of the embodiments of this application, the technical terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship in the working state of the embodiments of this application. They are only used to facilitate the description of the embodiments of this application and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0069] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0070] In the description of the embodiments of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; at the same time, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering.

[0071] In the description of the embodiments of this application, "multiple" means two or more (including two), unless otherwise explicitly specified.

[0072] In the description of the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, and other dimensions of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0073] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0074] A battery device may include battery cell packs to provide voltage and capacity. It may also include a Battery Distribution Unit (BDU), signal acquisition components, and a Battery Management Unit (BMU). The BDU, also known as a high-voltage box or distribution box, is a key component of the battery device. Its core function is to control the charging and discharging of the battery cell packs and to provide overvoltage and overcurrent protection. Specifically, this includes controlling the power-on / off process, pre-charging process, and charging process of the high-voltage electrical circuit. The signal acquisition components are used to collect key parameters such as voltage, current, and temperature from the electrical connections and electronic components within the BDU. The core function of the Battery Management Unit is to manage and maintain the operating status of the battery device. This includes monitoring key parameters such as voltage, current, and temperature of the battery cell packs, regulating power transmission by controlling the on / off state of the circuits within the BDU, and optimizing the charging and discharging process based on parameter information. This ultimately extends the battery device's lifespan and improves the overall system operating efficiency.

[0075] The power distribution unit includes multiple electronic components and electrical connectors for circuit connection. In related technologies, signal acquisition is achieved by connecting a signal acquisition component to the electrical connector. Specifically, the signal acquisition component is a sampling terminal assembly, which includes sampling terminals and sampling wiring harnesses. The sampling terminals are bolted to mounting holes in the electrical connectors to acquire and monitor the status information of the electronic components and electrical connectors connected to them, and the parameter information is transmitted to the battery management unit via the sampling wiring harness. However, the bolting method is structurally complex and involves many components (e.g., bolts, nuts, and clamps for fixing the sampling structure), making assembly inconvenient. Furthermore, creating mounting holes in the electrical connectors compromises their structural integrity and reduces their ability to carry high currents.

[0076] To address the aforementioned issues, embodiments of this application provide a battery device comprising a battery cell pack, a power distribution unit, and a signal acquisition component. The power distribution unit is electrically connected to the battery cell pack. The power distribution unit includes electronic components and electrical connectors. The electrical connectors include a body and a thinned area. The body is electrically connected to two electronic components for current transmission between the two electronic components. The thickness of the thinned area is less than the thickness of the body, and the thinned area is located on the side of the body. The signal acquisition component is plugged into the thinned area for acquiring parameter information at the electrical connector.

[0077] The beneficial effects of the battery device in the above scheme are as follows: A thinning area is provided on the electrical connector, which can be used as a sampling area for the signal acquisition component to collect parameter information from the power distribution unit. Since the thickness of the thinning area is less than the thickness of the electrical connector body and the thinning area is located on the side of the body, the electrical connector can be easily plugged into the signal acquisition component through the thinning area, improving assembly and disassembly efficiency and facilitating production and maintenance. Furthermore, in the electrical connector, the body is mainly used to carry high-current overcurrent transmission and can serve as a load-bearing component for the high-current path. The thinning area located on the side of the body is electrically connected to the signal acquisition component and can serve as the sampling area of ​​the sampling path. By dividing the electrical connector into the body and the thinning area, functional partitioning of the sampling path and the high-current path can be achieved at the physical level, thereby effectively improving sampling accuracy and system stability.

[0078] The technical solutions provided in this application are applicable to electrical equipment that uses battery devices as a power source and energy storage devices that use battery devices as energy storage elements. Electrical equipment can be vehicles, ships, spacecraft, etc. Energy storage devices can be energy storage containers, energy storage cabinets, etc.

[0079] For ease of description, this application uses the application of a battery device in a vehicle as an example for illustration.

[0080] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle according to some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery device 100 is disposed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0081] In some embodiments, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0082] refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery device according to some embodiments of this application. The battery device includes a housing 120 and a battery cell pack 110. The housing 120 has a receiving cavity, in which the battery cell pack 110 is received.

[0083] In some embodiments, a battery apparatus may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or in a mixed configuration via a busbar.

[0084] In some embodiments, a battery cell pack is typically formed by arranging multiple battery cells.

[0085] As an example, a battery cell group can be a battery module, which consists of multiple battery cells arranged and fixed to form an independent module.

[0086] As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0087] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more battery cell groups housed within the housing.

[0088] As an example, a battery cell pack can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0089] As an example, battery cell packs can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0090] As an example, such as Figure 2 As shown, the housing 120 may include a first housing 1201 and a second housing 1202. The first housing 1201 and the second housing 1202 are fastened together to form a closed space inside the housing 120 to house the battery cell pack 110. Here, "closed" refers to covering or closing, which can be sealed or unsealed. The first housing 1201 may be a top cover or a bottom plate.

[0091] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The frame may be formed by multiple side walls, and the top cover and bottom plate are connected to the frame respectively, so that the interior of the enclosure forms a closed space to accommodate the battery cell pack.

[0092] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0093] In some embodiments, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0094] As an example, the battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited in this regard.

[0095] As an example, the battery cell can be a prismatic battery cell or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not limit this.

[0096] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings. The technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0097] refer to Figure 3 , Figure 3 This is a three-dimensional structural schematic diagram of an electrical connector provided according to some embodiments of this application.

[0098] Firstly, such as Figure 3As shown, an embodiment of this application provides a battery device, including a battery cell pack, a power distribution unit, and a signal acquisition component; the power distribution unit is electrically connected to the battery cell pack; the power distribution unit includes electronic components and an electrical connector 10, the electrical connector 10 including a body 11 and a thinning region 12; the body 11 is electrically connected to two electronic components for current transmission between the two electronic components; the thickness of the thinning region 12 is less than the thickness of the body 11, and the thinning region 12 is disposed on the side of the body 11; the signal acquisition component is plugged into the thinning region 12 for acquiring parameter information at the electrical connector 10.

[0099] Specifically, electronic components can be used to control the switching on and off of high-voltage circuits. These electronic components can include relays, fuses, resistors, shunts, high-voltage connectors, and battery cell output stages. Among these, relays can include main positive relays, main negative relays, and pre-charge relays.

[0100] Electrical connector 10 can electrically connect two electronic components to achieve high-current transmission and high-voltage output between the electronic components. Optionally, such as Figure 3 As shown, the body 11 may be provided with a first connection terminal 111 and a second connection terminal 112 respectively connected to two electronic components. A thinning region 12 is disposed on the side of the body 11 near either the first connection terminal 111 or the second connection terminal 112. Optionally, the electrical connector 10 can electrically connect the output stage of the battery cell pack and a relay. Optionally, the electrical connector 10 can electrically connect the relay and a high-voltage connector.

[0101] For example, the electrical connector 10 may be a bar (conductive sheet); for example, a copper bar.

[0102] Optionally, the body 11 of the electrical connector 10 is a plate structure. For example, the body 11 of the electrical connector 10 can be a bent plate structure with a bend in the middle; this design can adapt to the layout of the power distribution unit and optimize the layout space.

[0103] Optionally, the body 11 of the electrical connector 10 can be made of excellent metallic conductor materials such as copper or aluminum to ensure good conductivity and current transmission capability. The thinned region 12 of the electrical connector 10 can be made of the same material as the body 11, or it can be appropriately adjusted according to performance requirements and cost control to meet the requirements of different application scenarios.

[0104] Alternatively, the thinning region 12 and the body 11 can be integrally formed. For example, the thinning region 12 can be formed by a thinning process on the side of the body 11.

[0105] It should be understood that the electrical connector 10 has higher hardness and is more difficult to thin in order to absorb tolerances and achieve the mating strength and bolt clamping force with the counterpart. For this reason, a high-tonnage stamping press can be used to create the thinning zone 12 on the body 11 of the electrical connector 10 using a thinning process.

[0106] It should be noted that the thickness of the thinning region 12 can be understood as the average thickness of the thinning region 12, and the thickness of the body 11 can be understood as the average thickness of the body 11. The edge of the body 11 can be the edge of the surface of the body 11 that is perpendicular to its thickness direction.

[0107] Optionally, the parameter information may include voltage information data, current information data, temperature information data, etc.

[0108] It should be noted that, since the signal acquisition component is electrically connected to the thinned area 12 of the electrical connector 10, and the body 11 of the electrical connector 10 is connected to the electronic components, the parameter information acquired by the signal acquisition component can reflect the status information of the electronic components connected to the electrical connector 10, so as to realize the status monitoring of the corresponding electronic components.

[0109] In the above technical solution, a thinning area 12 is provided on the electrical connector 10. The thinning area 12 can be used as a sampling area for the signal acquisition component to collect parameter information of the power distribution unit. Since the thickness of the thinning area 12 is less than the thickness of the body 11 of the electrical connector 10 and the thinning area 12 is located on the side of the body 11, the electrical connector 10 can be easily plugged into the signal acquisition component through the thinning area 12, which can improve the assembly and disassembly efficiency and facilitate production and maintenance.

[0110] Furthermore, in the electrical connector 10, the main body 11 is mainly used to carry the overcurrent transmission of large currents and can serve as a bearing component for the large current path. The thinned area 12, which is set on the side of the main body 11, is electrically connected to the signal acquisition component and can serve as the sampling area of ​​the sampling path. By dividing the electrical connector 10 into the main body 11 and the thinned area 12, the functional partitioning of the sampling path and the large current path at the physical level can be realized, thereby effectively improving the sampling accuracy and system stability.

[0111] In some embodiments, such as Figure 3 As shown, at least a portion of the thinning region 12 protrudes from the side of the body 11, and at least a portion of the structure of the thinning region 12 protruding from the side of the body 11 is plugged into and cooperates with the signal acquisition component.

[0112] It should be understood that the thinning area 12 is located on the side of the body 11. The thinning area 12 may be located in the side area of ​​the body 11 but not protrude from the side of the body 11. The thinning area 12 may be set with only one side aligned with the side of the body 11.

[0113] In response to this, the thinning region 12 is further defined so that at least a portion of the structure of the thinning region 12 can protrude from the side of the body 11, thereby making at least a portion of the structure of the thinning region 12 independent of the body 11, reducing the influence of the body 11 on the thinning region 12, and facilitating the connection between the thinning region 12 and the signal acquisition component.

[0114] In the above technical solution, the design of at least part of the structure of the thinning region 12 protruding from the side of the body 11 can, on the one hand, minimize interference between the side of the body 11 and the signal acquisition component during the insertion and mating process, thus facilitating assembly; on the other hand, it can facilitate the processing of the thinning region 12.

[0115] refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the structure of the electrical connector and the battery management unit plugged in according to some embodiments of this application; Figure 5 This is a schematic diagram of the structure in which the thinned area and the first slot are connected and mated according to some embodiments of this application.

[0116] In some embodiments, such as Figure 4 and Figure 5 As shown, the battery device also includes a battery management unit 20 electrically connected to the signal acquisition component; the signal acquisition component is a first slot 21 that is inserted into the thinning region 12, and the first slot 21 is disposed on the battery management unit 20.

[0117] Specifically, the battery management unit 20 may include a battery management circuit board. The battery management circuit board may be a key component of the battery management unit, used to process and convert the collected parameter information. The battery management circuit board may be the circuit board of the BMU, or it may be a circuit board integrating the circuitry of the BMU and the CSC.

[0118] For example, the internal space of the first slot 21 matches the external contour of the thinning area 12 inserted into the first slot 21, and after the first slot 21 and the thinning area 12 are inserted, the two can be connected together by friction.

[0119] Alternatively, such as Figure 5 As shown, the first slot 21 is provided with an elastic pressing member 211. After the thinned area 12 is inserted into the first slot 21, it abuts against the elastic pressing member 211, and under the pressing action of the elastic pressing member 211, the thinned area 12 can be fixed in the first slot 21. Of course, by applying a certain external force to the electrical connector 10, the thinned area 12 can be pulled out from the first slot 21.

[0120] Optionally, the number of elastic compression members 211 can be one, two, three, four or even more.

[0121] Optionally, the elastic pressing member 211 may be distributed on at least one side of the first slot 21 in the thickness direction of the thinning region 12, and / or the elastic pressing member 211 may be distributed on at least one side of the first slot 21 in the third direction; wherein the third direction is perpendicular to the thickness direction of the thinning region 12 and the insertion / removal direction of the thinning region 12 when it mates with the first slot 21.

[0122] Optionally, the elastic pressing member 211 can be an elastic sheet or an elastic protrusion.

[0123] In the above technical solution, by setting the signal acquisition component as the first slot 21 and integrating it on the battery management unit 20, and then using the thinning area 12 to connect with the first slot, the electrical connector 10 can be directly plugged into the battery management unit 20; in this way, components such as the sampling terminal assembly (which may include sampling terminals and sampling wires) can be eliminated, simplifying the structure, improving the integration and space utilization of the device, and further improving the assembly efficiency.

[0124] Furthermore, such as Figure 3 and Figure 5 As shown, at least a portion of the thinning region 12 protrudes from the side of the body 11, and at least a portion of the structure of the thinning region 12 protruding from the side of the body 11 is inserted into and engaged with the first slot 21.

[0125] In response to this, the thinning region 12 is further defined so that at least a portion of the structure of the thinning region 12 can protrude from the side of the body 11, so that at least a portion of the structure of the thinning region 12 can be independent of the body 11, reducing the influence of the body 11 on the thinning region 12, which is beneficial to the mating connection between the thinning region 12 and the first slot 21 on the battery management unit 20.

[0126] For example, the body 11 of the electrical connector 10 can be connected to the electronic component by bolt locking. Both the first connecting end 111 and the second connecting end 112 on the body 11 can be connecting holes for use with bolts, and the connecting holes can be arranged through the body 11 along its thickness direction. The bolt locking method between the body 11 and the electronic component provides a reliable connection and high stability.

[0127] In the above technical solution, the design of at least a portion of the thinning region 12 protruding from the side of the body 11 can, on the one hand, minimize interference between the side of the body 11 and the battery management unit 20 during insertion and mating. Moreover, the structure of the thinning region 12 protruding from the side of the body 11 can be inserted into the first slot 21 without interference from the body 11, allowing more of the thinning region 12 to connect with the first slot 21, which helps to improve the connection strength. On the other hand, it can facilitate the processing of the thinning region 12. For example, the thinning region 12 protruding from the side of the body 11 can be formed by directly using a thinning process on a portion of the structure on the side of the body 11.

[0128] refer to Figures 6 to 15 , Figure 6 This is a schematic diagram of the connection and mating structure between the electrical connector and the sampling terminal according to some embodiments of this application; Figure 7 for Figure 6 A magnified structural diagram of part A in the middle; Figure 8 This is a three-dimensional structural schematic diagram of a sampling terminal provided according to some embodiments of this application; Figure 9 This is a schematic diagram of the cross-sectional structure of the thinned region and two sheets after assembly according to some embodiments of this application; Figure 10 This is a schematic diagram of the structure of a first type of thinning region provided according to some embodiments of this application; Figure 11 This is a schematic diagram of the structure of a second thinning region provided according to some embodiments of this application; Figure 12 This is a schematic diagram of the structure of a third thinning region provided according to some embodiments of this application; Figure 13 This is a schematic diagram of the structure of a fourth thinning region provided according to some embodiments of this application; Figure 14 This is a schematic diagram of the structure of the fifth thinning region provided according to some embodiments of this application; Figure 15 This is a schematic diagram of the structure of the thinned area and sampling terminal in an incompletely assembled state according to some embodiments of this application.

[0129] In some embodiments, such as Figures 6 to 8 As shown, the signal acquisition component also includes a sampling terminal 30 and a sampling wire 40; the sampling terminal 30 includes a clamping structure 31 and a connector 32 connected together; the clamping structure 31 is provided with a second slot 311, which is inserted into the thinning region 12; the connector 32 is provided with a receiving space; one end of the sampling wire 40 is inserted into the receiving space and fixed to the connector 32, and the other end of the sampling wire 40 is connected to the battery management unit 20 so that the thinning region 12 is electrically connected to the battery management unit 20.

[0130] Specifically, the sampling terminal 30 is the connection structure between the sampling wire 40 and the thinning region 12, and is a conductor. For example, the sampling terminal 30 is a conductive metal component. The clamping structure 31 and the connector 32 are both part of the sampling terminal 30, and correspondingly, the clamping structure 31 and the connector 32 are conductive; wherein, the clamping structure 31 and the connector 32 can be metal components of the same material, or metal components of different materials.

[0131] Alternatively, the clamping structure 31 and the connector 32 can be made as a single piece.

[0132] It should be noted that the internal structure of the second slot 311 provided on the clamping structure 31 can be consistent with the internal structure of the first slot 21 in the above embodiment, so as to facilitate insertion and cooperation with the thinning area 12; of course, the second slot 311 is not limited to the above-described structural form, and the embodiments of this application do not limit it.

[0133] It should be understood that, in order to facilitate the insertion and engagement of the second slot 311 and the thinning area 12, at least a portion of the thinning area 12 may be provided protruding from the side of the body 11, and at least a portion of the structure of the thinning area 12 protruding from the side of the body 11 may be inserted and engaged with the second slot 311.

[0134] Specifically, the sampling wire 40 is a conductive wire used to collect information related to electrical components; for example, the sampling wire 40 can be used to collect and transmit voltage, current and temperature information of electronic components, etc.

[0135] In the above technical solution, the sampling terminal 30 is inserted into the thinning area 12 through the second slot 311 on the clamping structure 31, which can realize the electrical connection between the sampling terminal 30 and the electrical connector 10. The sampling terminal 30 is connected to the sampling wire 40 through the connector 32 and the sampling wire 40 is connected to the battery management unit 20, which can realize the electrical connection between the sampling terminal 30 and the battery management unit 20. That is, the electrical connection between the electrical connector 10 and the battery management unit 20 can be realized through the sampling terminal 30 and the sampling wire 40, so that the battery management unit 20 can collect the parameter information at the electrical connector 10.

[0136] Moreover, since the second slot 311 on the clamping structure 31 can be inserted into the thinning area 12, the connection between the sampling terminal 30 and the electrical connector 10 is simpler, the assembly efficiency is high, and maintenance is convenient.

[0137] Furthermore, such as Figure 7 and Figure 8As shown, the clamping structure 31 includes two sheet bodies 312 spaced apart, and the gap between the two sheet bodies 312 forms a second slot 311; when the thinning region 12 is inserted into the second slot 311, the thinning region 12 is clamped between the two sheet bodies 312, and the thinning region 12 and the two sheet bodies 312 are stacked along the thickness direction of the thinning region 12.

[0138] It should be understood that after the thinning area 12 is inserted into the second slot 311, the thinning area 12 and the two sheet bodies 312 are stacked along the thickness direction of the thinning area 12. It can be seen that the two sheet bodies 312 are arranged with their large surfaces facing each other. Therefore, after the thinning area 12 is inserted between the two sheet bodies 312, the large surface of the thinning area 12 will contact the large surfaces of the two sheet bodies 312. This allows the two sheet bodies 312 and the thinning area 12 to have more contact area, thereby improving the connection strength between the clamping structure 31 and the thinning area 12.

[0139] Optionally, the two sheets 312 can have a certain degree of elasticity, and in their natural state, the two sheets 312 are close to each other; this structural design can facilitate the clamping of the thinning area 12 inserted between the two sheets 312, increase the friction between the two sheets 312 and the thinning area 12, and improve the connection stability between the three.

[0140] In the above technical solution, the clamping structure 31 adopts a structure design of two plates 312, which has the characteristics of simple structure, convenient processing, low cost and high connection strength.

[0141] Furthermore, such as Figure 9 As shown, a first limiting part 121 is provided on the thinning region 12, and a second limiting part 3121 is provided on the opposite side of the two sheets 312. When the thinning region 12 is inserted between the two sheets 312, the first limiting part 121 and the second limiting part 3121 engage with each other along the thickness direction of the thinning region 12, so that the thinning region 12 and the two sheets 312 are limited in at least one direction perpendicular to the thickness direction of the thinning region 12.

[0142] Specifically, one of the first limiting part 121 and the second limiting part 3121 is a protruding structure and the other is a slotted structure. The protruding structure matches the slotted structure, and the protruding structure can be inserted into the slotted structure along the thickness direction of the thinning region 12.

[0143] Optionally, the first limiting portion 121 may be formed on the side of the thinning region 12, and / or the first limiting portion 121 may be formed on one side of the thinning region 12 in its thickness direction, and / or the first limiting portion 121 may pass through the thinning region 12 in the thickness direction of the thinning region 12.

[0144] For example, such as Figures 10 to 12As shown, the first limiting part 121 is a groove structure formed on the side of the thinning region 12. The groove structure can be semi-circular, serrated, rectangular, etc. Correspondingly, the second limiting part 3121 can be a protrusion structure corresponding to the shape of the groove structure.

[0145] For example, such as Figure 13 As shown, the first limiting portion 121 is a protrusion formed on one side of the thinning region 12 in its thickness direction. The protrusion can be a strip-shaped protrusion arranged side by side. Correspondingly, the second limiting portion 3121 can be a groove structure corresponding to the shape of the protrusion.

[0146] For example, such as Figure 14 As shown, the first limiting part 121 is a hole structure that penetrates the thinning region 12 along the thickness direction of the thinning region 12. Correspondingly, the second limiting part 3121 can be a cylindrical protrusion structure that matches the hole structure.

[0147] It should be noted that since the first limiting part 121 and the second limiting part 3121 need to be engaged along the thickness direction of the thinning region 12, the protrusions in the first limiting part 121 and the second limiting part 3121 are extended along the thickness direction of the thinning region 12. This structure may affect the stroke of the thinning region 12 when inserted between the two sheets 312. Therefore, the two sheets 312 can be provided with a certain elasticity. The elastic force can be used to make the thinning region 12 and the two sheets 312 smoothly inserted and engaged, while also allowing the first limiting part 121 and the second limiting part 3121 to engage.

[0148] In the above technical solution, the cooperation between the first limiting part 121 and the second limiting part 3121 can limit the thinning area 12 and the two sheets 312 in one or more directions. These directions are all perpendicular to the thickness direction of the thinning area 12. In this way, the connection stability between the clamping structure 31 and the thinning area 12 can be improved, and the desorption probability between the clamping structure 31 and the thinning area 12 can be reduced.

[0149] Furthermore, such as Figure 15 As shown, a first positioning part 122 is provided on the thinning area 12, and a second positioning part 3122 is provided between the two sheet bodies 312; when the thinning area 12 is inserted between the two sheet bodies 312, the first positioning part 122 and the second positioning part 3122 abut against each other along a first direction; wherein, the first direction is the direction in which the clamping structure 31 points to the connector 32 or the direction in which the connector 32 points to the clamping structure 31.

[0150] For example, the first positioning part 122 is the side surface of the thinning region 12, and the second positioning part 3122 is the wall surface of the gap formed between the two sheets 312. When the thinning region 12 is inserted between the two sheets 312, the side surface of the thinning region 12 and the wall surface of the gap can abut in the first direction.

[0151] In the above technical solution, the cooperation between the first positioning part 122 and the second positioning part 3122 can be used to determine whether the clamping structure 31 and the thinning area 12 are properly inserted, so as to facilitate the positioning and assembly between the sampling terminal 30 and the thinning area 12 and improve the stability after assembly.

[0152] Furthermore, after the thinning region 12 is inserted into the second slot 311, the thinning region 12 is welded to the clamping structure 31.

[0153] Alternatively, welding can be ultrasonic welding, electromagnetic pulse welding, laser welding, reflow welding, or other welding processes. Using welding processes helps to improve the connection between the thinning zone 12 and the clamping structure 31.

[0154] In the above technical solution, welding is performed on the basis of the insertion and cooperation between the clamping structure 31 and the thinning area 12, which can further improve the connection strength between the sampling terminal 30 and the electrical connector 10.

[0155] Furthermore, such as Figure 8 As shown, the connector 32 includes a connecting portion 321 and a pressing portion 322; the connecting portion 321 is connected to the clamping structure 31; the pressing portion 322 is connected to the side of the connecting portion 321 and together with the connecting portion 321 defines the receiving space; the pressing portion 322 can be bent toward the inside of the receiving space to fix one end of the sampling wire 40 placed in the receiving space.

[0156] For example, the connecting portion 321 may be generally arc-shaped, with an arc-shaped space formed on its inner side, which can serve as part of the receiving space. The pressing portion 322 is connected to the side of the connecting portion 321 and can be bent toward the inner side of the connecting portion 321. The bent pressing portion 322 and the arc-shaped space can enclose and define the receiving space.

[0157] Optionally, multiple pressing parts 322 may be provided and disposed on both sides of the connecting part 321.

[0158] Optionally, a reinforcing rib 323 may be provided between the connecting part 321 and the clamping structure 31 to enhance the connection strength between the connecting part 32 and the clamping structure 31.

[0159] In the above technical solution, the connector 32 can facilitate the insertion of the sampling wire 40 by providing a receiving space, and the pressing part 322 of the connector 32 can be bent, which can easily lock the end of the sampling wire 40 in the receiving space of the connector 32. Since the connecting part 321 is connected to the clamping structure 31 and the clamping structure 31 is connected to the thinning area 12, the design of the connector 32 can facilitate the electrical connection between the sampling wire 40 and the thinning area 12.

[0160] In some embodiments, the thickness of the thinning region 12 is T1, where T1 satisfies: 0.1mm≤T1≤2mm; the thickness of the body 11 is T2, where T2 satisfies: 1mm≤T2≤10mm.

[0161] For example, the thickness T1 of the thinning region 12 can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.5mm, 2mm, etc., or can be a range of any of the above values.

[0162] For example, the thickness T2 of the body 11 can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., or can be a range of any of the above values. Of course, the thickness T2 of the body 11 must simultaneously satisfy: T2 > T1.

[0163] In the above technical solution, by limiting the thickness range of the thinning region 12 and the thickness range of the body 11, the thinning region 12 and the body 11 in the electrical connector 10 can both have suitable thicknesses, so that the thinning region 12 is suitable as a sampling area for the sampling path, and the body 11 can carry the overcurrent transmission of large current, thereby realizing the functional partitioning of the sampling path and the large current path at the physical level; at the same time, the thinning region 12 and the body 11 with suitable thicknesses can have sufficient structural strength to meet the basic usage requirements of the electrical connector 10.

[0164] refer to Figure 16 and Figure 17 , Figure 16 This is a schematic diagram of the structure of a first transition region provided according to some embodiments of this application; Figure 17 This is a schematic diagram of the structure of a second transition region provided according to some embodiments of this application.

[0165] In some embodiments, such as Figure 16 and Figure 17As shown, a transition region 13 is provided between the thinning region 12 and the body 11; the dimension of the transition region 13 in the thickness direction of the thinning region 12 is the thickness dimension of the transition region 13, the thickness dimension of the transition region 13 is between the thickness of the thinning region 12 and the thickness of the body 11, and the thickness dimension of the transition region 13 tends to increase along the second direction; wherein, the second direction is the direction from one end of the transition region 13 connected to the thinning region 12 to one end of the transition region 13 connected to the body 11.

[0166] Optionally, the transition zone 13, the thinning zone 12, and the main body 11 can be integrally manufactured.

[0167] For example, the transition zone 13 and the thinning zone 12 can be formed by a thinning process based on the side structure of the body 11.

[0168] In the above technical solution, by setting the transition zone 13, the transition between the body 11 and the thinning zone 12 can be natural, the structure has continuity, good electrical conductivity, uniform stress distribution, and reliable mechanical strength.

[0169] Furthermore, such as Figure 16 As shown, the thinning region 12 has a first surface 123 perpendicular to its thickness direction, the transition region 13 has a second surface 131 perpendicular to the thickness direction of the thinning region 12, and the body 11 has a third surface 113 perpendicular to the thickness direction of the thinning region 12; wherein the first surface 123, the second surface 131 and the third surface 113 are coplanar.

[0170] In the above technical solution, the thinning zone 12, the transition zone 13 and the body 11 are coplanar on one side of the thickness direction of the thinning zone 12. With this structural design, only one side of the thinning zone 12 and the transition zone 13 needs to be thinned. The coplanar side of the thinning zone 12 and the transition zone 13 can be used as a positioning surface during processing to facilitate the formation of the thinning zone 12 and the transition zone 13.

[0171] Alternatively, such as Figure 17 As shown, the body 11 has a third surface 113 and a fourth surface 114 disposed opposite to each other along the thickness direction of the thinning region 12; the two surfaces of the thinning region 12 disposed opposite to each other in its thickness direction are located between the third surface 113 and the fourth surface 114.

[0172] In the above technical solution, the surfaces of the thinning region 12, the transition region 13, and the body 11 that are perpendicular to the thickness direction of the thinning region 12 are not designed to be coplanar. Furthermore, in the thickness direction of the thinning region 12, the thinning region 12 is located between the third surface 113 and the fourth surface 114 of the body 11. This makes the surfaces of the transition region 13 on both sides in the thickness direction of the thinning region 12 designed as transition planes, which can further improve the uniformity of stress distribution and enhance the structural strength between the thinning region 12, the transition region 13, and the body 11.

[0173] reference Figures 3 to 16The battery device provided in the embodiments of this application includes a battery cell pack, a power distribution unit, and a signal acquisition component. The power distribution unit is electrically connected to the battery cell pack. The power distribution unit includes electronic components and an electrical connector 10. The electrical connector 10 includes a body 11 and a thinning region 12. The body 11 is electrically connected to two electronic components for current transmission between the two electronic components. The thickness of the thinning region 12 is less than the thickness of the body 11, and the thinning region 12 is disposed on the side of the body 11. The signal acquisition component is plugged into the thinning region 12 for acquiring parameter information at the electrical connector 10. In some embodiments, at least a portion of the thinning region 12 protrudes from the side of the body 11, and at least a portion of the structure of the thinning region 12 protruding from the side of the body 11 is plugged into the signal acquisition component. In some embodiments, the battery device further includes a battery management unit 20 electrically connected to the signal acquisition component. The signal acquisition component is a first slot 21 that is plugged into the thinning region 12, and the first slot 21 is disposed on the battery management unit 20. In some embodiments, the signal acquisition assembly further includes a sampling terminal 30 and a sampling wire 40; the sampling terminal 30 includes a clamping structure 31 and a connector 32 connected together; the clamping structure 31 is provided with a second slot 311, which is inserted into the thinning region 12; the connector 32 is provided with a receiving space; one end of the sampling wire 40 is inserted into the receiving space and fixed to the connector 32, and the other end of the sampling wire 40 is connected to the battery management unit 20 so that the thinning region 12 is electrically connected to the battery management unit 20. Further, the clamping structure 31 includes two sheets 312 spaced apart, and the gap between the two sheets 312 forms the second slot 311; when the thinning region 12 is inserted into the second slot 311, the thinning region 12 is clamped between the two sheets 312, and the thinning region 12 and the two sheets 312 are stacked along the thickness direction of the thinning region 12. Further, the connector 32 includes a connecting portion 321 and a pressing portion 322; the connecting portion 321 is connected to the clamping structure 31; the pressing portion 322 is connected to the side of the connecting portion 321 and together with the connecting portion 321 defines an accommodating space; the pressing portion 322 can be bent toward the inside of the accommodating space to fix one end of the sampling wire 40 placed in the accommodating space. In some embodiments, the thickness of the thinning region 12 is T1, where T1 satisfies: 0.1mm≤T1≤2mm; the thickness of the body 11 is T2, where T2 satisfies: 1mm≤T2≤10mm. In some embodiments, a transition region 13 is provided between the thinning region 12 and the body 11; the dimension of the transition region 13 in the thickness direction of the thinning region 12 is the thickness dimension of the transition region 13, the thickness dimension of the transition region 13 is between the thickness of the thinning region 12 and the thickness of the body 11, and the thickness dimension of the transition region 13 tends to increase along a second direction; wherein, the second direction is the direction from one end of the transition region 13 connected to the thinning region 12 to one end of the transition region 13 connected to the body 11.Furthermore, the thinning region 12 has a first surface 123 perpendicular to its thickness direction, the transition region 13 has a second surface 131 perpendicular to the thickness direction of the thinning region 12, and the body 11 has a third surface 113 perpendicular to the thickness direction of the thinning region 12; wherein the first surface 123, the second surface 131 and the third surface 113 are coplanar.

[0174] Secondly, embodiments of this application also provide an electrical device, including a battery device provided in any of the embodiments of the first aspect, the battery device being used to provide electrical energy.

[0175] In the above technical solution, the electrical equipment can achieve the same technical effect as the battery device by adopting the battery device in the first aspect.

[0176] Thirdly, embodiments of this application also provide an energy storage device, including a battery device provided in any of the embodiments of the first aspect, the battery device being used to store electrical energy.

[0177] In the above technical solution, the energy storage device can achieve the same technical effect as the battery device by adopting the battery device in the first aspect.

[0178] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0179] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. This application is not limited to the specific embodiments applied herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a battery cell group; a power distribution unit electrically connected to the battery cell group; the power distribution unit comprises electronic components and an electrical connector, the electrical connector comprises a body and a thinned region; the body is electrically connected to two electronic components for current transmission between the two electronic components; the thickness of the thinned region is less than the thickness of the body, and the thinned region is arranged on the side of the body; and a signal acquisition assembly which is plugged with the thinned region for acquiring parameter information at the electrical connector.

2. The battery device according to claim 1, wherein at least part of the thinned region protrudes from the side of the body, and the structure of at least part of the thinned region protruding from the side of the body is plugged with the signal acquisition assembly.

3. The battery device according to claim 1, wherein the battery device further comprises a battery management unit electrically connected to the signal acquisition assembly; the signal acquisition assembly is a first slot which is plugged with the thinned region, and the first slot is arranged on the battery management unit.

4. The battery device according to claim 1, wherein the signal acquisition assembly further comprises a sampling terminal and a sampling lead; the sampling terminal comprises a clamping structure and a connecting piece which are connected; the clamping structure is provided with a second slot which is plugged with the thinned region; the connecting piece is provided with a receiving space; one end of the sampling lead is inserted into the receiving space and fixed to the connecting piece, and the other end of the sampling lead is connected to the battery management unit, so that the thinned region is electrically connected to the battery management unit.

5. The battery device according to claim 4, wherein the clamping structure comprises two pieces which are arranged at intervals, and the gap between the two pieces forms the second slot; when the thinned region is inserted into the second slot, the thinned region is clamped between the two pieces, and the thinned region and the two pieces are arranged in a stacked manner along the thickness direction of the thinned region.

6. The battery device according to claim 5, wherein the thinned region is provided with a first limiting part, and the opposite sides of the two pieces are provided with second limiting parts; when the thinned region is inserted between the two pieces, the first limiting part and the second limiting part are engaged in the thickness direction of the thinned region, so that the thinned region and the two pieces are limited in at least one direction perpendicular to the thickness direction of the thinned region.

7. The battery device according to claim 5, wherein the thinned region is provided with a first positioning part, and the two pieces are provided with a second positioning part between them; when the thinned region is inserted between the two pieces, the first positioning part and the second positioning part abut in a first direction; wherein the first direction is the direction in which the clamping structure points to the connecting piece or the direction in which the connecting piece points to the clamping structure.

8. The battery device according to claim 4, wherein When the thinning region is inserted into the second slot, the thinning region is welded with the clamping structure. 9.The battery device of claim 4, wherein, the connecting member comprises a connecting portion and a pressing portion; the connecting portion is connected with the clamping structure; the pressing portion is connected to a side of the connecting portion and cooperates with the connecting portion to define the accommodating space; the pressing portion is capable of being bent towards an inner side of the accommodating space to fix an end of the sampling lead wire placed in the accommodating space. 10.The battery device of any one of claims 1-9, wherein, a thickness of the thinning region is T1, and the T1 satisfies 0.1mm≤T1≤2mm; a thickness of the body is T2, and the T2 satisfies 1mm≤T2≤10mm. 11.The battery device of any one of claims 1-9, wherein, a transition region is arranged between the thinning region and the body; a dimension of the transition region in a thickness direction of the thinning region is a thickness dimension of the transition region, the thickness dimension of the transition region is between the thickness of the thinning region and the thickness of the body, and the thickness dimension of the transition region presents a trend of increasing along a second direction; wherein, the second direction is a direction in which one end of the transition region connecting the thinning region points to one end of the transition region connecting the body. 12.The battery device of claim 11, wherein, the thinning region has a first face perpendicular to the thickness direction thereof, the transition region has a second face perpendicular to the thickness direction of the thinning region, and the body has a third face perpendicular to the thickness direction of the thinning region; wherein, the first face, the second face and the third face are arranged coplanarly. 13.The battery device of claim 11, wherein, the body has a third face and a fourth face arranged opposite along the thickness direction of the thinning region; two surfaces of the thinning region arranged opposite in the thickness direction thereof are between the third face and the fourth face.

14. An electrical device, characterized by A battery device as claimed in any one of claims 1-13 is used to provide electric energy.

15. An energy storage device, comprising: A battery device as claimed in any one of claims 1-13 is used to store electric energy.

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